创新不仅仅是技术,更是思维方式的改变。
Modern quarry management requires geologists' eyes, engineers' hands, and poets' hearts.
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.